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b'It\\u2019s not a bird or a plane, and probably not an alien spaceship, although the jury\\u2019s still deliberating that one.\\xa0Some astronomers have proposed that an oddly-shaped object that recently passed through our Solar System could be an alien artifact. We consider the E.T. explanation for \\u2018Oumuamua, but also other reasons asteroids are invigorating our imagination.\\xa0Are these orbiting rocks key to our future as a spacefaring species?\\nFind out why traditional incentives for human exploration of space \\u2013 such as political rivalry \\u2013aren\\u2019t igniting our rockets the way they once did, but why the potentially trillions of dollars to be made mining asteroids might.\\nThese small bodies may also hold the key to our ancient past: the New Horizons flyby of Thule in early 2019 will provide an historic look at a distant Kuiper belt object, and provide clues about the formation of the Solar System.\\nGuests:\\n\\n\\n Roger Launius\\xa0\\u2013 Former associate director of the National Air and Space Museum at the Smithsonian and chief historian for NASA\\n\\n\\nJ. L.Galache\\xa0\\u2013 Asteroid astronomer and co-founder and CTO of Aten Engineering\\n\\n\\nMark Showalter\\xa0\\u2013 Planetary scientist and Senior Research Scientist at the SETI Institute and a member of the New Horizons team\\n\\n\\nAvi Loeb\\xa0\\u2013 Professor of Science at Harvard and chair of the Department of Astronomy\\n\\n\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'